db=sorted(db,key=lambdax:x[0],reverse=True)#计算ROC坐标点xy_arr = []tp, fp = 0., 0.foriinrange(len(db)):tp+=db[i][2]fp+=db[i][1]xy_arr.append([fp/neg,tp/pos])#计算曲线下面积auc = 0.prev_x=0forx,yinxy_arr:ifx!=prev_x:auc+=(x-prev_x)*y prev_x=xprint"the...